cxx/test/numerics/rand/rand.dis/rand.dist.pois/rand.dist.pois.poisson/ctor_double.pass.cpp

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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <random>
// template<class IntType = int>
// class poisson_distribution
// explicit poisson_distribution(RealType lambda = 1.0);
#include <random>
#include <cassert>
int main()
{
{
typedef std::poisson_distribution<> D;
D d;
assert(d.mean() == 1);
}
{
typedef std::poisson_distribution<> D;
D d(3.5);
assert(d.mean() == 3.5);
}
}